Given,
The measure of side AC is 30 meters.
The measure of side BC is 18 meter.
Required
The measure of side AB.
Here,
ABCD is a rectangle.
So, side AB, BC and Ac will follow Pythagoras theorem.
[tex]\begin{gathered} AC^2=AB^2+BC^2 \\ 30^2=AB^2+18^2 \\ 900=AB^2+324 \\ AB^2=576 \\ AB=24 \end{gathered}[/tex]
Hence, the measure of side AB is 24 m.
